joining frus boston, nbc news capitol hill correspondent luke russert. lou, where do we stand on this investigation this morning? >> reporter: good morning, bill. some fascinating developments over the last days of this suspect. you just mentioned right there he has become cooperative with investigators. he is still injured in the throat and tongue area. so he has not been able to speak. so he has been writing down his answers, essentially saying he and his brother acted alone. they were motivated by reledge just fervor. they have not had any contact outside the united states. they weren't operating from some terrorist cell abroad, essentially, penning it down to them being two lone wolves. some other interesting developments in that idea, how exactly were they able to figure out how to construct a bomb? well, they found that information out from the internet, saying they were able to read things on certain websites that enabled them to put those those bombs that ended up injuring three people and injuring dozens upon others. investigators and officials